What should be done to obtain a pure line of animals?

Maximum fat content is present in the meat of:

What was developed during the White Revolution?

Which of the following statements are the main objectives of animal breeding?
$I$. Improved growth rate
$II$. Increased production of milk,meat,egg,wool,etc.
$III$. Superior quality of milk,meat,eggs,wool,etc.
$IV$. Improved resistance to various diseases
Choose the correct option.

Inbreeding is carried out in animal husbandry because it

Silage supplemented with oil cakes,vitamins,etc. makes up good feed for rearing breeds of . . . . . . .